The Sing-Off (2009–2013)

1. S01E01PilotDecember 14, 2009—Eight a cappella groups from across America compete to win a recording contract; host Nick Lachey.
2. S01E02Big Hits & Guilty PleasuresDecember 15, 2009—Two groups leave as the competition heats up.
3. S01E03Superstar Medley, Judges' Challenge & Songs Of HopeDecember 16, 2009—
4. S01E04The FinaleDecember 21, 2009—Finale

Season 1 ranked & reviewed

1. S02E01Episode 1December 6, 2010—
2. S02E02Episode 2December 8, 2010—
3. S02E03Episode 3December 13, 2010—
4. S02E04Episode 4December 15, 2010—The five remaining groups come together for a performance; each group sings a medley of songs by a single artist; the judges choose the cont
5. S02E05Episode 5December 20, 2010—

Season 2 ranked & reviewed

1. S03E01Season Premiere: Part 1September 19, 2011 9.0Eight of the 16 competing acapella groups perform as the competition kicks off. Sara Bareilles joins Ben Folds and Shawn Stockman on the jud
2. S03E02Season Premiere: Part 2September 26, 2011—Eight more groups perform together and separately. The groups include Messiah's Men, North Shore, Pentatonix, Sonos, Soul'd Out, The Collect
3. S03E03Radio Hits & 60's Classics: Part IOctober 3, 2011—Theme: Radio Hits (first round), 60's Classics (second round) Group performance: "Somewhere Only We Know" by Keane
4. S03E04Radio Hits & 60's Classics: Part 2October 10, 2011—Theme: Radio Hits (first round), 60's Classics (second round) Group performance: "Rhythm of Love" by Plain White T's
5. S03E05Top 10 Groups: Guilty Pleasure MusicOctober 17, 2011—Theme: Guilty pleasures Group performance: "All Night Long (All Night)" by Lionel Richie*
6. S03E06Top 8 Groups: Hip-Hop HitsOctober 24, 2011—Group performance: "Nothin' on You" by B.o.B. featuring Bruno Mars
7. S03E07Top 7 Groups: Superstar MedleysOctober 31, 2011—Group performance: Halloween medley of "This Is Halloween" by Danny Elfman, "Werewolves of London" by Warren Zevon and "Ghostbusters" by Ray
8. S03E08Top 6 Groups: Rocking Out & Goin' CountryNovember 7, 2011—Theme: Rock classics (first round), Country hits (second round) Group performance: "Wake Up" by Arcade Fire
9. S03E09Top 5 Groups: The Rhythm & Blues RevueNovember 14, 2011—The top five groups open the show with a medley of "I Feel Good" by James Brown, "ABC" by The Jackson 5 and "Crazy in Love" by Beyonce. Late
10. S03E10America Votes: Group MastermixesNovember 21, 2011—Theme: Master Mix (combining 2 songs from different artists) (first round), Judges' Choice (second round) Group performance: Master Mix: "B
11. S03E11Live Finale: Top 3 FinalistsNovember 28, 2011—The final three groups perform for the last time before finding out who America voted as the country’s best a capella group.

Season 3 ranked & reviewed

1. S04E01The Sing Off Is Back!December 9, 2013—The groups try to make a good first impression on the judges.
2. S04E02Party AnthemsDecember 11, 2013—The nine remaining groups perform party anthems.
3. S04E03#1 HitsDecember 12, 2013—Eight groups perform their favorite hit.
4. S04E04My GenerationDecember 16, 2013—The groups perform songs they hope will please all generations.
5. S04E05Movie NightDecember 18, 2013—The groups perform songs from movies.
6. S04E06Judges' ChoiceDecember 19, 2013—The groups perform songs chose by the judges.
7. S04E07FinaleDecember 23, 2013—The three remaining groups compete; one group is declared the winner.

Season 4 ranked & reviewed

1. S05E01One Night Only: A Special Holiday EventDecember 17, 2014—A cappella groups Timothy's Gift, Melodres, the Exchange, Traces, San Fran 6 and A.Squared compete for a first-place prize of $50,000. Jewel

Season 5 ranked & reviewed